emulator: add more description in cosimulation and rename cosimStep->runUntilNextEvent
emulator: add more description in cosimulation and rename cosimStep->runUntilNextEvent

jbush001/NyuziProcessor,jbush001/NyuziProcessor,jbush001/NyuziProcessor,jbush001/NyuziProcessor,jbush001/NyuziProcessor,jbush001/NyuziProcessor